Clear-Com EF-701M - Manual (Page 17)

E F - 7 0 1 M I N T E R F A C E 1 - 7
system that the EF-701M connects to via the DB-15) must accept line-level (-15 dBu to
+4 dBu) 4-wire audio and, if call signal is desired, RS-422 data.
Figure 1-4: Six EF-701M units link various locations to a single channel
EF-701M EF-701M
PK-7
3 DB15 3 DB15 3 3
EF-701M EF-701M
PK-7
3 DB15 3 DB15 3 3
3
3
= Male 3-Pin XLR
= Female 3-Pin XLR
Party-Line Intercom EF-701M EF-701M
Fiber Modems
3 3 3 DB15 3 DB15 3
3
3
Party-Line Intercom
3